/Engine/Plugins/Runtime/RigVM/Source/RigVMEditor/Public/Editor/RigVMEditor.h
Called when another toolkit (such as a ed mode toolkit) is being hosted in this asset editor toolkit.
virtual void OnToolkitHostingStarted ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< class [IToolkit](API\Editor\EditorFramework\Toolkits\IToolkit) > & Toolkit )